Central-draft lamp-burner



No. 749,132. PATENTED JA-N.5,'19o4.

J. GREGORY;

CENTRAL DRAFT LAMP BURNER.

APPLICATION FILED JUNE 10. 1901.

R0 MODEL.

Wi'lryasss lgi/zglpi- W .2, I 4 M I gmu s UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

CENTRAL-DRAFT LAM P-BU RNER.

SPECIFICATION forming part of Letters Patent No. 749,132, dated January 5, 1904.

Original application filed June 24, 1899, Serial No. 721,721. Divided and this application filed June 10, 1901. Serial To all whom it may concern} Be it known that I, JOSEPH GREGORY, a citi zen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented a new and useful Central-Draft Lamp-Burner, of which the following is a specification.

The invention relates to central-draft lampburners, (the present invention being a division of my former application, filed J one 24, 1899, Serial No. 721,721;) and the object in View is to effect general improvements in the construction of the burner, and particularly to provide an air-passage between the cone or flame-spreader and the inner wick-tube to prevent overheating the adjacent portions thereof, and, furthermore, to provide a gasspace of which one wall is formed by the'inner portion of the upper surface ofthe wick and from which the gas is permitted to escape to the flame.

Further objects and advantages of the invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims, it being understood that various changes in the form, proportion, and the minor-details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

The accompanying drawing represents a vertical sectional view of a central-draft lampburner embodying the present invention.

The wick B, which is of tubular form, is arranged between the concentric inner and outer wick-tubes A and O, and upon the upper end of the wick rests a guard I, which is of annular construction and is designed to prevent the charring of the upper end of the wick and also to act as an extinguisher when the wick is lowered. The guard may be perforated in the plane of the wick, as shown, if preferred.

The cone or flame-spreader D extends upward from the plane of the guard and is also provided below the plane thereof with an extension consisting of a band or ring a of a diameter less than the inner wick-tube and separated therefrom to form an air space or (No model.)

passage 0, with which communicate perforations in the band or ring to insure an upward circulation of air to prevent overheating of the upper portion of the inner wick-tube and the adjacent portion of the cone or spreader, and hence to prevent the charring of the adjacent portion of thewick. To guide and properly center the cone or spreader, it is preferable to employ a spacer between the band or ring and the inner wick-tube, and

in the construction illustrated this spacer consists of an inwardly-flared upper edge of the inner wick-tube, as shown at 2 Also extending upward from a transverse bridgepiece L is a guide-rod L, arranged centrallyv of the burner and provided at its upper end with an adjustable stop-nut 8, which serves to limit the upward movement of the cone or spreader.

At the upper end of the wick above the spacer and closed at itsouter side by the inner surface of said wick is a gas-space, of which the adjacent portions of the band or ring a and the guard I form the inner wall, means being provided for the escape of the gas from this space to the flame. Said means consist of perforations in the inner wall of the gas-space, and the upward current of air induced by the flame draws the gas as it is generated at the inner surface of the wick through the perforations and conveys it to the flame to add to the illuminating capacity of the lamp.

Having described the invention, what is claimed is 1. A central-draft lamp-burner having inner and outer wick-tubes adapted for the interposition of a wick and a flame-spreader and wick-guard disposed to form the inner wall of a gas-space, ofwhich the outer wall is formed by the wick, said inner wall being provided with means for the escape of gas to the flame.

2. A central-draft lamp-burner comprising inner and outer wick-tubes, a flame-spreader and a wick-guard, and having a gas-space of which the outer wall is formed by the inner surface of the wick, and of which the inner wall is formed by the adjacent portions of the flame-sp reader and guard, said inner wall being provided with means for escape of the gas to the flame.

3. A central-draft lamp-burner having inner and outer wick-tubes, a flame-spreader and a wick-guard, said spreader having a band below the guard and within the inner wick-tube to form a gas-space closed at its outer side by the wick, and means for permitting escape of the gas from the gas-space to the flame.

4. A central-draft lamp-burner having inner and outer Wick-tubes, a wick-guard, and a flamespreader coacting with the wickguard and having a band extending below the plane thereof and smaller in diameter than the inner wick-tube to form a gas-space closed at its outer side by the wick, means being provided in the inner wall of the gasspace for the escape of gas to the flame.

5. A central-draft larnp-burner having inner and outer wick-tubes, a wick-guard, and a flame spreader coacting with the wickguard and having a band extending below the plane of the guard to form a gas-space closed at its outer side by the wick, said band being provided with perforations to allow gas to escape to the flame.

6. A central-draft lamp-burner having inner and outer wick-tubes, a wick-guard, a flame-spreader coacting with the wick-guard and having a band extending below the plane of the guard within the inner wick-tube to form a gas-space closed at its outer side by the wick, and having means to permit the escape of gas to the flame, and means for spacing the band from the inner wick-tube.

7. A central-draft lamp-burner having inner and outer wick-tubes, a wick-guard, a flame-spreader coacting with the wick-guard and having a band depending below the plane of the guard to form a gas-space closed at its outer side by the wick, said band being provided with means to permit the escape of gas to the flame, and an inwardlyextending spacing-flange on the inner wicktube.

8. In a lamp-burner, the combination with innerand outer wick-tubes forming an intervening wick-spaee,a perforated cone or flamespreader movable vertically and having an air-passage formed between it and the upper portion of the inner wick-tube, and a movable wick guard supporting said cone or spreader.

9. In a lamp-burner, the combination of inner and outer wick-tubes forming an intervening wick space, a perforated cone or spreader having an air-passage formed between it and the upper portion of the inner wick-tube, and a movable wick-protecting ring or guard.

10. In a central-draft lamp, the combination with inner and outer wick-tubes, of a flame-spreader, a guard coacting with the flame-spreader to prevent the flame from reaching the upper inner edge of the wick,

a band extending below the guard within the inner wick-tube, and means for the escape of gas from the upper inner edge of the wick to the flame.

11. In a central-draft lamp, the combination with inner and outer wick-tubes, of a verticallymovable flame-spreader, a wickguard coacting with the flame-spreader to prevent the flame from reaching the upper inner edge of the wick, and a perforated band extending below the guard within the inner Wick-tube.

12. In a central-draft lamp, the combination with an inner and outer wick-tube, of a verticallymovable flame -spreader, a wickguard coacting with the flamespreader to prevent the flame from reaching the upper inner edge of the wick, a perforated band extending below the guard within the inner wick-tube, and a centrally-disposed rod for limiting the vertical movement of the flamespreader, guard and band.

18. In a central-draft lamp, the combination with inner and outer wick-tubes, of a vertically-movable spreader, a wick-guard coacting with the flame-spreader to prevent the flame from reaching the upper inner edge of the wick, means for the escape of gas from a that portion of the wick to the flame, and a band extending below the wick-guard within the inner wick-tube.

14. In a central-draft lamp, the combination with inner and outer wick-tubes, of a vertically movable flame spreader, a wickguard coacting with the flame-spreader to prevent the flame from reaching the upper inner edge of the wick, means for the escape of gas from that portion of the wick to the flame, a band extending below the guard within the inner wick-tube, and a centrallydisposed rod for limiting the vertical movement of the flame-spreader, wick-guard and band.

15. In a central-draft lamp, the combination with inner and outer wick-tubes, of a flame-spreader, a guard coacting with the flame -spreader to prevent the flame from reaching the upper inner edge of the wick, and a perforated band extending below the guard within the inner wick-tube.

16. In acentral-draft lamp, an outer and an inner wick-tube, a wick adapted to move vertically between them, a wick-guard uniting with the flame-spreader to divide the flame from a gas-space formed between the upper inner edge of the wick and a perforated band extending down into the inner wick-tube.

17. In a central-draft lamp, an outer and inner wick-tube, a wick adapted to-move vertically between said tubes, a wick-guard uniting with a flame-spreader to divide the flame from a gas-space formed between the upper inside edge of the wick and a perforated band extending down into the inner wick-tube, a spacer to hold said band away from the wick.

18. In a central-draft lamp, an outer and inner wick-tube, a wick adaptedto move vertically between said tubes, at wick-guard uniting with a flame-spreader to prevent the flame from passing down between the wick and flame-spreader, the wick-guard coacting with the flame-spreader, and stop to limit the vertical movement of the wick.

19. In a central-draft lamp, an outer and inner wick-tube, a wick adapted to move verticall y between said tubes, at wick-guard coacting with a flame-spreader and centrally-disposed rod to limit the vertical movement of said wick, the wick -guard uniting with the flame-spreader to divide the flame from a gasspace formed between the upper end of the wick and a band extending down into theinner wick-tube.

20. In acentral-draft lamp, an outer and inner wick-tube,a wick adapted to move vertically between said tubes, a wick-guard coacting with a flame-spreader and stop to limit the vertical movement of the wick, the wickguard uniting with the flame-spreader to divide the flame from a space formed between the upper inside edge of the wick and a perforated band extending down into the inner Wick-tube.

21. In a central-draft lamp, an outer and inner wick-tube, a wick adapted to move vertically between said tubes, a wick-guard coacting with a flame-spreader and stopto limit the into the inner wick-tube, and a spacer to hold said band away from the wick.

23. In a central-draft lamp, an outer andinner wick-tube, a wick adapted to move vertically between said tubes, a wick-guard coacting with the flame-spreader and stop to limit the vertical movement of the wick, the-wick-.

guard preventing the flame from passing down between the upper end of the wick and a band extending down into the inner wicktube.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JOSEPH GREGORY.

Witnesses:

JAMEs F. GANNON, EUGENE W. DIEMER. 

